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Re: how to best resync serial columns

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On Nov 10, 2008, at 6:48 PM, Brent Wood wrote:

Hi,

I have a number of tables with serial columns as a primary key.

I'm looking to add lots of records via copy, but should reset the serial counters to the appropriate value after this.

Is there a simple way to do this, or do I just update the last_value column in each seq table to the max(id) from the relevant table.

You shouldn't edit sequence table directly. To set a sequence's value you should use the setval(seqname, seqval) function like so:

SELECT setval('some_seq', 1000);

Erik Jones, Database Administrator
Engine Yard
Support, Scalability, Reliability
866.518.9273 x 260
Location: US/Pacific
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